Box-nailing machine.



E. U. NORTHRUR.

BOX NAILING MACHINE APPLICATION FILED JUNE7,1911.

1,037,299, Patented Sept. 3, 1912.

2 SHEETS-SHEET 1.

E. C. NORTHRUP.

BOX NAILI'NG MACHINE.

APPLICATION FILED JUNE 7,1911,

Patented Sept 3,1912.

2 SHEETS-SHEET 2.

unrrnn srrarns PATENT. onrron,

ELMEB'G. NOBTERUP, OE SAN FRANCISCO, CADIMRNIA...

BOX-NAILING MLGH-INE.

li elfiaation of Letters Patent. Patentedsept. 3, 1912;

Application filed June 7,1911; SerialNo. 631,860.

To all whom it may concern:

Be it known that I, ELMER C; NORTHRUP, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented a new and useful Box-Nailing Machine, of whichthe following is a specification,

This invention relatesto box-making machines and the main object ofthe'present invention is to provide a second table, or

box rest, which is so constructed that it may be instantly moved into orout of box supporting position. Thus when nailing the sides, the regulartable will be used, and the second table will be swung out of supportingposition and will not interfere with the box or the nailing operation.After the sides have been nailed the second table is instantly swungintoposition, and supports the box while the bottom is being nailed. It isthus possible with one machine, to perform the operation of nailing boththe sides and bottoms.

Referring to the drawings: Figure 1 is a perspective view of the lowerportion of the machine constructed with my second table. Fig. 2 is aperspective View, on a larger scale, of the second table. Fig. 3 is aperspective of the sliding block. Fig. 4 is a perspective of thevertical screw. Fig. 5 is a perspective of the nut. Fig. 6 is a sideelevation of the machine showing the position of the second table, andposition during the operation of nailing the bottom.

1 designates the base of the'machine, with standards 2.

' 3 is the regular table, or box rest, which is used to support the boxwhile the sides are being nailed, this table being mounted to slide onvertical ways at, on standards 2. A vertical screw 5 supports the table3 and also another table to be described, the upper end of the screwbeing journaled at 6 in the.

table 3. A pinion 7 is secured on the upper end of the screw 5, andmeshes with a gear 8, which is journaled under the table 3, and isadapted to be rotated by hand to revolve the screw 5, the lower end ofthe screw being threaded in a non-revoluble nut 9 which is secured inthe base 1, whereby the table 3 may be raised or lowered when the handgear 8 is operated.

10 designates the second table which is supported by legs 11, with feet12 which are pivoted at 13 to a sliding pivot block 14 shown in detailin Fig. 3, and having a smooth bore 15, which slides over the screw 5.The legs 11 lie between the standards 2, and the tablelO projectsforward from the standards 2 when the table 10 is in supporting positionas shown in Figs. 1 and 6, and when in this position the table 10 liesabove the table 3, so that the table 3 does not interfere with theproper placing of the box on the table 10 during the nailing of thebottom. \Vhen the sides are being nailed the table 10 is pushed back sothat'it does not project in front of the standards 2, and the box thenrests upon the table 3. The table 10 does thus not interfere with thebox during the nailing of the sides.

The block 14 has a lug 16, towhich is secured a coil tension spring 17,the other end of the spring '17 being secured at 18 to one of the legs11, and the table 10 is thus yieldingly held in supporting position.Thus in the operation of nailing the sides, the box is placed on theregular table 3 and pushed back against the face of the ways, the table10 readily yielding backward as the box ismoved into nailing position.lVhen the box is withdrawn for nailing the bottom the table 10 isautomatically moved into protruding position 'ready to support the box,and the box is then placed thereon with its bottom uppermost ready forthe nailing of the bottom, in the position shown in F ig. 6: Block 14:is supported by a, threaded hand wheel 19 on the screw 5, and byadjusting the hand wheel 19, the height of the table 10 may be regulatedto the exactpoint desired. When the regular table 3 has been set in theproper position, and the second table 10 has been set in proper positionit is obviously not necessary to change the settin of the machine as thesecond table 10 ylelds when the box is moved 'into nailing positiononthe regular table 3 for nailing the sides, and the table 10automatically moves into supporting position when permittedfto do so bymoving back the box fromv it. The tension of the spring 17 may beregulated by the nut 20.

21 designates the nailing mechanism in general, and 22 designates themechanism for driving the machine, the detailed construction of which isimmaterial to the pres ent invention. v

What I claim is:

1. In a box nailing machine, a main frame, a reglilar table verticallymovable thereon, a vertical'screw' for regulating the height of the reular table, a block slidable over said screw, legs pivoted to saidblock, a second table supported by said legs above the first table,

.2. In .a .box nailing machine, a main frame, a regular table verticallymovable thereon, a vertical screw for regulating the height of theregular table, a block slidable over said screw, legs pivoted" to saidblock, a second table supported by said legs above the first table, a 5ring between said block and a leg for yiel ingly holding the secondtable in nailing position.

3. In a box nailing machine, a main frame, a regular table verticallymovable thereon, a vertical screw for regulatingthe height of theregular table, a block slidable over said screw, legs pivoted to saidblock,

a second table supported by said legs above the first table, a nut onsaid screw below said block for adjusting the height of said block tovary the position of the second 4. In a box nailing machine, a mainframe, a regular \tablevertically movable thereon, a vertical screw forregulating the height of the regular table, a block slidable over saidscrew, legs pivoted to said block, a second table supported by said legsabove the first table, a nut on said screw below said block foradjusting the height of said block to vary the position of the secondtable, said screw being journaled at its upper end in the regular table,a pinion on said screw, and a hand gear below the regular table, meshingwith said pinion.

In testimony whereof, I have hereunto set my hand at San Francisco,California, this 29th day of May 1911.

' ELMER o. NORTHRUP.

In presence of GREG S. MGEVERS, D. B. RICHARDS.

